Home / 83,511.28-125,188.52-28,068.40

Finding the Fourth Proportional to 83,511.28, 125,188.52 and 28,068.40

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Solution

The fourth proportional to 83,511.28, 125,188.52 and 28,068.40 is: 42,076.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,511.28 : 125,188.52 = 28,068.40 : x
  2. Step 2: Convert to fraction form
    83,511.28/125,188.52 = 28,068.40/x
  3. Step 3: Cross multiply
    83,511.28x = 125,188.52 × 28,068.40
  4. Step 4: Simplify right side
    83,511.28x = 3,513,841,454.77
  5. Step 5: Solve for x
    x = 3,513,841,454.77/83,511.28
  6. Step 6: Final answer
    x = 42,076.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.